Соответствующая норма
Practice Relating to Rule 107. Spies
Section A. Definition of spies
Ecuador’s Naval Manual (1989) defines a spy as:
someone who, while in territory under enemy control or the zone of operations of a belligerent force, seeks to obtain information while operating under a false claim of non-combatant or friendly forces status with the intention of passing that information to an opposing belligerent. Members of the armed forces who penetrate enemy-held territory in civilian attire or enemy uniform to collect intelligence are spies. Conversely, personnel conducting reconnaissance missions behind enemy lines while properly uniformed are not spies. 
Ecuador, Aspectos Importantes del Derecho Internacional Marítimo que Deben Tener Presente los Comandantes de los Buques, Academia de Guerra Naval, 1989, § 12.8.